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ServiceNOTE: Refer to Fig. 7 for steps 7 to 11.7. Grease the trip rod (22) with light, water-proofgrease and slide it into the piston (2) shaft. Cleanthe threads of the piston and the connecting rodstud (36). Apply Loctite 242 or the equivalent toboth. Screw the stud into the piston and torque to148–162 ft-lb (200–220 Nm).8. Place the cylinder (44) upside down on the base(50 or 66). Grease the piston (2), o-ring (29*), andinside of the cylinder. Place the o-ring around thepiston; the o-ring is larger than the piston groove.Install the piston in the cylinder so the excess ofthe o-ring fits into one of the air channels (M) ofthe cylinder. Use your fingers to push the o-ringout of the channel and seat it in the piston groove.Very carefully lower the piston into the cylinder.CAUTIONWhen reassembling the sanitary air motor, Model625794, apply sealant to the cylinder flange to sealout exhaust air that could contaminate the material.Use silicone sealant GE NO. SCS 1300 or equivalent.9. Regrease the inside of the cylinder (44). Carefullyturn the piston assembly and cylinder over andguide it into the base (50 or 66). Align one of thecylinder’s air channels (M) with the notch (K) in thegasket (19) and with the optional fluid outlet (L) ofthe base. Install the lockwashers (6) and screws(11) and torque to 9–15 ft-lb (11–20 Nm).10. Install the backup washer (20*) and v-block packing(21*) in the bearing (1) so the lips of the packingface out of the bearing. Install the gasket (16*)on the bearing. Grease the trip rod (22) and threadthe bearing onto the trip rod and into the cylinder(44). Use a 1 in. deep-well socket wrench totighten the bearing to 14–18 ft-lb (19–24 Nm).11. Install the rubber pad (28) and washer (27) in thecylinder (44).14 307049
ServiceModel 208356 ShownDetail of Piston2 129* 11234Grease with light, waterproof grease.Apply Loctite 242 or equivalent to threads.Torque to 148–162 ft-lb (200–220 Nm).Grease inside wall of cylinder.5678Torque to 9–15 ft-lb (11–20 Nm).Lips of packing must face out of the bearing.Torque to 14–18 ft-lb (19–24 Nm).Align air channel (M) and notch (K) ingasket (19) with the optional fluid outlet(L) in the base (50 or 66).27281716*244420*21* 622 111522126M850 or 66K8236307274L807270Fig. 730704915
Page 1 and 2: Instructions-Parts List7 in. (178 m
Page 3 and 4: SKIN INJECTION HAZARDWARNINGSpray f
Page 5 and 6: InstallationGeneral InformationNOTE
Page 7 and 8: TroubleshootingWARNINGMoving parts
Page 9 and 10: ServiceNOTE: Refer to Fig. 4 for st
Page 11 and 12: ServiceModel 208356 Shown2728116442
Page 13: ServiceReassembly1. Clean all parts
Page 17 and 18: ServiceNOTE: Refer to Fig. 9 for st
Page 19 and 20: Notes30704919
Page 21 and 22: PartsModel 902098, Series AModel 20
Page 23 and 24: PartsModel 208357, Series JInclude
Page 25 and 26: PartsModel 625794, Series AInclude
Page 28: The Graco Standard WarrantyGraco wa

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